Mezclas y soluciones (Mixtures and Solutions)

La princesa Rubí encuentra un reloj extraño en el bosque, lo que provoca que el destino se enfade al creer que lo ha robado y la castigue hundiendo su castillo en las profundidades del mar, dejando a la realeza y a todo su pueblo en la más absoluta miseria. Para salir de este castigo, la princesa deberá ir al misterioso bosque encantado poniéndose en riesgo por sus peligrosas y extraordinarias criaturas. Tendrá que encontrar en cada rincón pistas para unir el cuerpo de su novio que está esparcido por todo el bosque. La lupa y sus misterios se traslada a un mundo de fantasía, donde se ...

“Dino” Don Lessem brings readers face-to-face with various dinosaur species, detailing their habitats, way of life and how they became extinct. An acclaimed dinosaur expert, Don Lessem has written more than 30 children’s books, writes a popular dinosaur column in Highlights magazine, and was an adviser for Jurassic Park. Take a trip through dinosaur time to meet these horned dinosaurs face-to-face: Torosaurus had the biggest skull of any animal ever! Pentaceratops had five sharp horns on its head! Styracosaurus was as big as an ice cream truck! Plus, you'll get to know Centrosaurus,...

Some of the most powerful things in the world are so tiny they can't be seen with the naked eye! Readers will be amazed at what they see when they take a glance at the world of the mini but mighty in this stunningly fascinating Spanish-translated nonfiction title that features remarkable images and graphics, informational text, index, and glossary. Through these features, readers are able to explore and discover such micros as DNA, atoms, bacteria, phytoplankton, and nanotechnology items like nano-robots and microchips!

From art and architecture to politics, philosophy, and mathematics, "western civilization" owes a great deal to the achievements of ancient Greece, but what do we really know about this long-gone civilization? How did geography influence the politics of the Greek city-states? What's the difference between an agora and an acropolis? This book takes readers several thousand years into the past, when independent city-states ruled the Mediterranean Sea, to find the answers. Full-color photographs and maps, accompanied by accessible text, introduce readers to the many contributions the ancient...